TE Connectivity 521597-1 Quick Connect Female Crimp Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 521597-1 is a 0.187" (4.75mm) Quick Connect Female 14-18 AWG Crimp Connector with full insulation, designed for free-hanging in-line and right-angle mounting applications. This connector is part of the Ultrapod series and features a fully insulated angled 90° flag terminal configuration.

The 521597-1 is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to ensure continued availability, maintain supply chain continuity, and support ongoing production and maintenance requirements for applications utilizing this connector type.

Key Parameters

Parameter	Specification
Tab Width	0.187" (4.75mm)
Tab Thickness	0.020" (0.51mm)
Wire Gauge	14-18 AWG
Gender	Female
Terminal Type	Angled - 90°, Flag
Insulation Type	Fully Insulated
Mounting Type	Free Hanging (In-Line), Right Angle
Termination Method	Crimp
Insulation Diameter	0.110" ~ 0.150" (2.79mm ~ 3.81mm)
Contact Material	Brass
Series	Ultrapod

Substitute Part Grouping Explanation

Substitution eligibility for the 521597-1 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Tab Width: 0.187" (4.75mm)
Tab Thickness: 0.020" (0.51mm)
Wire Gauge: 14-18 AWG
Gender: Female
Terminal Type: Angled - 90°, Flag
Insulation Type: Fully Insulated
Mounting Type: Free Hanging (In-Line), Right Angle
Termination Method: Crimp
Insulation Diameter: 0.110" ~ 0.150" (2.79mm ~ 3.81mm)
Contact Material: Brass
Series: Ultrapod

The substitute part 521597-2 maintains complete electrical and mechanical compatibility with the 521597-1 across all specified parameters. The primary distinction between these parts is product status and packaging configuration.

Parameter Comparison

Parameter	521597-1 (Main Part)	521597-2 (Substitute)	Compatibility
Tab Width	0.187" (4.75mm)	0.187" (4.75mm)	Identical
Tab Thickness	0.020" (0.51mm)	0.020" (0.51mm)	Identical
Wire Gauge	14-18 AWG	14-18 AWG	Identical
Gender	Female	Female	Identical
Terminal Type	Angled - 90°, Flag	Angled - 90°, Flag	Identical
Insulation Type	Fully Insulated	Fully Insulated	Identical
Mounting Type	Free Hanging (In-Line), Right Angle	Free Hanging (In-Line), Right Angle	Identical
Termination Method	Crimp	Crimp	Identical
Insulation Diameter	0.110" ~ 0.150" (2.79mm ~ 3.81mm)	0.110" ~ 0.150" (2.79mm ~ 3.81mm)	Identical
Contact Material	Brass	Brass	Identical
Series	Ultrapod	Ultrapod	Identical
Product Status	Obsolete	Active	Different
Packaging	Not specified	Cut Tape (CT)	Different
Contact Finish	Not specified	Tin	Different
RoHS Status	RoHS Compliant	ROHS3 Compliant	Both compliant

Engineering Selection Recommendations

The 521597-2 is the direct substitute for the obsolete 521597-1. Selection of 521597-2 is based on the following engineering criteria:

Product Status: The 521597-1 is classified as obsolete, while 521597-2 maintains active product status. Active status ensures ongoing manufacturer support, quality assurance, and supply chain availability.

Regulatory Compliance: Both parts maintain RoHS compliance. The 521597-2 carries ROHS3 Compliant certification, representing current regulatory standards. The 521597-2 additionally carries REACH Unaffected status, confirming compliance with chemical substance regulations.

Electrical and Mechanical Equivalence: All critical parameters determining connector functionality, mating compatibility, and wire termination capacity are identical between the two parts. The 521597-2 maintains the same tab dimensions, wire gauge rating, insulation specifications, and terminal geometry as the 521597-1.

Packaging and Availability: The 521597-2 is available in Cut Tape (CT) packaging with 7,426 pieces in current inventory, compared to the 521597-1 with limited obsolete stock of 941 pieces.

Frequently Asked Questions (FAQ)

Q: Can 521597-2 be used as a direct replacement for 521597-1 in existing applications?

A: Yes. The 521597-2 is electrically and mechanically equivalent to the 521597-1 across all specified parameters including tab dimensions, wire gauge compatibility, terminal geometry, and insulation specifications. No circuit or mechanical redesign is required.

Q: What is the difference between 521597-1 and 521597-2?

A: The primary differences are product status and packaging. The 521597-1 is obsolete, while 521597-2 is active. The 521597-2 is supplied in Cut Tape (CT) packaging and includes tin contact finish specification. Both parts are functionally identical for connector applications.

Q: Are there any compatibility concerns when substituting 521597-2 for 521597-1?

A: No compatibility concerns exist. Both connectors feature identical tab width (0.187"), tab thickness (0.020"), wire gauge rating (14-18 AWG), terminal type (Angled 90° Flag), and insulation diameter range (0.110" to 0.150"). Mating and termination characteristics are identical.

Q: What packaging format is 521597-2 supplied in?

A: The 521597-2 is supplied in Cut Tape (CT) packaging, which is standard for component distribution and automated assembly processes.

Q: Does 521597-2 meet current regulatory requirements?

A: Yes. The 521597-2 is ROHS3 Compliant and REACH Unaffected, confirming compliance with current environmental and chemical substance regulations. Both parts maintain RoHS compliance.

Q: Is 521597-2 currently available?

A: Yes. The 521597-2 is active product status with 7,426 pieces in current inventory, ensuring reliable supply chain availability for production and maintenance applications.

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